| Model | DH-NVR4808 | DH-NVR4816 | DH-NVR4832 |
| System |
| Main Processor | Dual-core embedded processor |
| Operating System | Embedded LINUX |
| Video & Audio |
| IP Camera Input | 8 channel | 16 channel | 32 channel |
| Two-way Talk | 1channel Input, 1channel Output, RCA |
| Display |
| Interface | 1 HDMI,1 VGA,1 BNC |
| Resolution | 1920×1080, 1280×1024, 1280×720, 1024×768 |
| Display Split | 1/4/8/9 | 1/4/8/9/16 | 1/4/8/9/16 |
| OSD | Camera title, Time, Video loss, Camera lock, Motion detection, Recording |
| Recording |
| Compression | H.264/MJPEG |
| Resolution | 5Mp（2560×1920）/3Mp（2048×1536）/1080P(1920×1080) / 720P(1280×720) / D1 (704×576/704×480)&etc. |
| Record Rate | 200Mbps |
| Bit Rate | 48~ 8192kbps |
| Record Mode | Manual, Schedule(Regular(Continuous), MD, Alarm), Stop |
| Record Interval | 1~120 min (default: 60 min), Pre-record: 1~30 sec, Post-record: 10~300 sec |
| Video Detection & Alarm |
| Trigger Events | Recording, PTZ, Tour, Alarm, Video Push, Email, FTP, Buzzer & Screen tips |
| Video Detection | Motion Detection, MD Zones: 396(22×18), Video Loss & Camera Blank |
| Alarm Input | 16 channel |
| Relay Output | 4 channel |
| Playback & Backup |
| Sync Playback | 1/4/9 | 1/4/9/16 | 1/4/9/16 |
| Search Mode | Time/Date, Alarm, MD & Exact search (accurate to second), Smart search |
| Playback Function | Play, Pause, Stop, Rewind, Fast play, Slow play, Next file, Previous file, Next camera, Previous camera, Full screen, Repeat, Shuffle, Backup selection, Digital zoom |
| Backup Mode | USB Device/Network/Internal SATA burner/eSATA Device |
| Network |
| Ethernet | 2 RJ-45 port (10/100/1000Mbps) |
| Network Function | HTTP, TCP/IP, IPv4/IPv6, UPNP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPOE, DDNS, FTP, Alarm Server, IP Search(Support Dahua IP camera, DVR, NVS and etc.) |
| Max. User Access | 128users |
| Smart Phone | iPhone, iPad, Android, Windows Phone |
| Storage |
| Internal HDD | 8 SATA ports, up to 32TB |
| External HDD | 1 eSATA port |
| Auxiliary Interface |
| USB | ports (1 Rear USB3.0,2 Front USB2.0) |
| RS232 | 1 port, For PC communication&Keyboard |
| RS485 | 1 port, For PTZ control |
| General |
| Power Supply | AC 100V~240V,50/60HZ |
| Power Consumption | 40W(without HDD) |
| Working Environment | -10°C ~+55°C / 10%~90%RH / 86~106kpa |
| Dimension
(W×D×H) | 2U, 440mm×460mm×89mm |
| Weight | 6.5KG(without HDD) |